Rifle buttstock



FIG. 1 is a perspective view of the top, front and left side thereof;

FIG. 2 is a perspective view of the bottom, front and right side hereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a front end view thereof;

FIG. 6 is a rear end view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a left side view thereof, shown in an environment of use.

The broken lines in FIGS. 5, 6 and 9 illustrate environment, which forms no part of the claimed invention. 

The ornamental design for a rifle buttstock, as shown and described. 